Learn with us how to create an amazing Confetti Button using Javascript!
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Happy coding! 😻
Contents:
1. HTML Code
2. CSS Code
3. Javascript Code
Get your code ⬇️
1. HTML Code
<button id="button" class="ready" onclick="clickButton();"> <div class="message submitMessage"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 13 12.2"> <polyline stroke="currentColor" points="2,7.1 6.5,11.1 11,7.1 "/> <line stroke="currentColor" x1="6.5" y1="1.2" x2="6.5" y2="10.3"/> </svg> <span class="button-text">Submit</span> </div> <div class="message loadingMessage"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 19 17"> <circle class="loadingCircle" cx="2.2" cy="10" r="1.6"/> <circle class="loadingCircle" cx="9.5" cy="10" r="1.6"/> <circle class="loadingCircle" cx="16.8" cy="10" r="1.6"/> </svg> </div> <div class="message successMessage"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 13 11"> <polyline stroke="currentColor" points="1.4,5.8 5.1,9.5 11.6,2.1 "/> </svg> <span class="button-text">Success</span> </div>
</button> <canvas id="canvas"></canvas> <!-- Website Corner Link -->
<a class="website-link" href="https://codepen.io/coopergoeke" target="_blank" rel="noopener noreferrer"> <svg class="website-link__icon" viewBox="0 0 936.86 1054.94"> <circle cx="468.43" cy="607.07" r="395.02" fill="#fff" stroke="#8aa8c5" stroke-width="55" stroke-miterlimit="10"/> <path d="M235.76 936.24l9.7-135.08c3.7-53.1 43.2-96.01 96.01-93.96h250.85c52.81-2.05 92.33 41.65 96.01 93.96l10.73 135.81s-98.94 65.12-231.06 65.12-232.24-65.85-232.24-65.85z" fill="#293b67"/> <circle cx="468.43" cy="607.07" r="395.02" fill="none" stroke="#8aa8c5" stroke-width="55" stroke-miterlimit="10"/> <path d="M532.23 716.09c0 23.61-35.44 30-64.23 30s-64.23-8.39-64.23-30V607.76h128.46v108.33z" fill="#e2cfbb"/> <path d="M532.23 678.63s-35.44 8.46-64.23 8.46-64.23-7.83-64.23-7.83v-130.5h128.46v129.87z" fill="#d3c2b2"/> <path d="M722.57 326.26c0 193.67-79.11 350.67-255.53 350.67s-253.25-157-253.25-350.67 156.76-210.31 253.25-210.31c126.23 0 255.53 16.64 255.53 210.31z" fill="#ffe8cc"/> <path d="M604.47 634.6c-11.18 8.23-23.2 15.37-36.06 21.33-29.33 13.58-63.06 20.99-101.38 20.99-31.91 0-60.57-5.14-86.1-14.7-50.16-18.78-88.26-54.66-115.33-102.22-35.3-62.04-51.82-143.95-51.82-233.74 0-83.76 29.32-134.41 70.41-164.91-90.46 362.86 101.1 570.06 320.28 473.25z" fill="#f3ddc3"/> <path d="M701.59 182.44c-6.72-15.99-8.89-39.53-18.6-51.9-1.69-2.16-6.62-3.91-12.43-5.52-15.99-16.61-43.59-39.48-65.94-49.1-7.45-3.21-49.94-38.95-58.11-41.45-6.06-1.85-3.35 25.38-19.3 18.59-31.38-13.36-71.2-32.91-85.46-34.43-17.17-1.84 6.77 41.39-12.69 41.39-36.11 0-65.27-23.14-82.97-25.55-1.48 22.91-9.35 37.78-24.01 44.8-12.97 6.21-42.51.74-53.19 9.43 8.93 20.86-.31 22.93-1.87 37.18-7.32 3.08-17.47 5.36-17.47 5.36-11.17 13.67-10.86 35.77-18.24 54.03-7.44 18.42-12.96 39.27-16.63 62.75-3.65 23.39-3.52 72.17-3.52 101 0 96.83 56.25-132.84 91.88-160.87 35.63-28.02 164-32.7 164-32.7S620 163.71 648.95 193.9c28.95 30.18 75.9 249.36 75.9 160.96 0-59.25-7.63-135.22-23.26-172.42z" fill="#f2cf6f"/> <path d="M441.75 18.63c-15.02-1.61 1.38 31.23-7.26 39.53 15.28-3.58 10.26-39.58 7.26-39.53z" fill="#d8b45c"/> <path d="M346.09 34.47c-1.48 22.91-12.06 43.85-33.99 47.54 12.81-1.1 21.29 3.03 34.75-2.18 17.45-6.76 16.94-42.95-.76-45.36z" fill="#d8b45c"/> <path d="M268.89 88.7c8.93 20.86-.31 22.93-1.87 37.18-7.32 3.08-17.47 5.36-17.47 5.36-11.17 13.67-10.86 35.77-18.24 54.03-7.44 18.42-12.96 39.27-16.63 62.75-3.65 23.39 15.73-33.35 48.77-64.39 32.36-30.39 16.12-103.62 5.44-94.93z" fill="#d8b45c"/> <path d="M505.31 460.4c0-10.8-16.63-19.55-37.14-19.55s-37.14 8.75-37.14 19.55 74.28 10.79 74.28 0z" fill="#d3bfae"/> <path d="M330.65 366.32c28.67-30.62 53.86-31.06 82.1 0" fill="none" stroke="#000" stroke-width="14" stroke-linecap="round" stroke-miterlimit="10"/> <path d="M521.65 366.32c28.67-30.62 53.86-31.06 82.1 0" fill="none" stroke="#000" stroke-width="14" stroke-linecap="round" stroke-miterlimit="10"/> <path d="M468.01 617.93c-35.42 0-71.93-28.05-71.93-55.82 0-12.56 10.52-18.84 23.38-18.84h97.43c12.86 0 23.38 6.31 23.38 18.84 0 30.2-36.84 55.82-72.26 55.82z" fill="#824446"/> <defs> <path id="a" d="M468.01 617.93c-35.42 0-71.93-28.05-71.93-55.82 0-12.56 10.52-18.84 23.38-18.84h97.43c12.86 0 23.38 6.31 23.38 18.84 0 30.2-36.84 55.82-72.26 55.82z"/> </defs> <clipPath id="b"> <use xlink:href="#a" overflow="visible"/> </clipPath> <circle cx="468.17" cy="614.05" r="30" clip-path="url(#b)" fill="#f37879"/> </svg> <span class="website-link__name">Cooper <span class="website-link__last-name">Goeke</span></span> <span class="website-link__message">Check out more of my work</span>
</a>
2. CSS Code
@keyframes loading { 0% { cy: 10; } 25% { cy: 3; } 50% { cy: 10; }
} body { -webkit-font-smoothing: antialiased; background-color: #f4f7ff;
} canvas { height: 100vh; pointer-events: none; position: fixed; width: 100%; z-index: 2;
} button { background: none; border: none; color: #f4f7ff; cursor: pointer; font-family: 'Quicksand', sans-serif; font-size: 14px; font-weight: 500; height: 40px; left: 50%; outline: none; overflow: hidden; padding: 0 10px; position: fixed; top: 50%; transform: translate(-50%, -50%); width: 190px; -webkit-tap-highlight-color: transparent; z-index: 1; &::before { background: #1f2335; border-radius: 50px; box-shadow: 0 2px 5px rgba(0, 0, 0, .4) inset; content: ''; display: block; height: 100%; margin: 0 auto; position: relative; transition: width .2s cubic-bezier(.39,1.86,.64,1) .3s; width: 100%; }
} // READY STATE
button.ready { .submitMessage svg { opacity: 1; top: 1px; transition: top .4s ease 600ms, opacity .3s linear 600ms; } .submitMessage .button-text span { top: 0; opacity: 1; transition: all .2s ease calc(var(--dr) + 600ms); }
} // LOADING STATE
button.loading { &::before { transition: width .3s ease; width: 80%; } .loadingMessage { opacity: 1; } .loadingCircle { animation-duration: 1s; animation-iteration-count: infinite; animation-name: loading; cy: 10; }
} // COMPLETE STATE
button.complete { .submitMessage svg { top: -30px; transition: none; } .submitMessage .button-text span { top: -8px; transition: none; } .loadingMessage { top: 80px; } .successMessage .button-text span { left: 0; opacity: 1; transition: all .2s ease calc(var(--d) + 1000ms); } .successMessage svg { stroke-dashoffset: 0; transition: stroke-dashoffset .3s ease-in-out 1.4s; }
} .button-text span { opacity: 0; position: relative;
} .message { left: 50%; position: absolute; top: 50%; transform: translate(-50%, -50%); width: 100%;
} .message svg { display: inline-block; fill: none; margin-right: 5px; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2;
} .submitMessage { .button-text span { top: 8px; transition: all .2s ease var(--d); } svg { color: #5c86ff; margin-left: -1px; opacity: 0; position: relative; top: 30px; transition: top .4s ease, opacity .3s linear; width: 14px; }
} .loadingMessage { opacity: 0; transition: opacity .3s linear .3s, top .4s cubic-bezier(.22,0,.41,-0.57); svg { fill: #5c86ff; margin: 0; width: 22px; }
} .successMessage { .button-text span { left: 5px; transition: all .2s ease var(--dr); } svg { color: #5cffa1; stroke-dasharray: 20; stroke-dashoffset: 20; transition: stroke-dashoffset .3s ease-in-out; width: 14px; }
} .loadingCircle:nth-child(2) { animation-delay: .1s }
.loadingCircle:nth-child(3) { animation-delay: .2s } /* Website Link */
.website-link { background: #f8faff; border-radius: 50px 0 0 50px; bottom: 30px; color: #324b77; cursor: pointer; font-family: 'Montserrat', sans-serif; font-weight: 600; height: 34px; filter: drop-shadow(2px 3px 4px rgba(#000, .1)); padding: 0 20px 0 40px; position: fixed; right: 0; text-align: left; text-decoration: none; &__icon { left: -10px; position: absolute; top: -12px; width: 44px; } &__name { display: block; font-size: 14px; line-height: 14px; margin: 5px 0 3px; } &__last-name { color: #55bada; } &__message { color: #8aa8c5; display: block; font-size: 7px; line-height: 7px; }
}
3. Javascript Code
// ammount to add on each button press
const confettiCount = 20
const sequinCount = 10 // "physics" variables
const gravityConfetti = 0.3
const gravitySequins = 0.55
const dragConfetti = 0.075
const dragSequins = 0.02
const terminalVelocity = 3 // init other global elements
const button = document.getElementById('button')
var disabled = false
const canvas = document.getElementById('canvas')
const ctx = canvas.getContext('2d')
canvas.width = window.innerWidth
canvas.height = window.innerHeight
let cx = ctx.canvas.width / 2
let cy = ctx.canvas.height / 2 // add Confetto/Sequin objects to arrays to draw them
let confetti = []
let sequins = [] // colors, back side is darker for confetti flipping
const colors = [ { front : '#7b5cff', back: '#6245e0' }, // Purple { front : '#b3c7ff', back: '#8fa5e5' }, // Light Blue { front : '#5c86ff', back: '#345dd1' } // Darker Blue
] // helper function to pick a random number within a range
randomRange = (min, max) => Math.random() * (max - min) + min // helper function to get initial velocities for confetti
// this weighted spread helps the confetti look more realistic
initConfettoVelocity = (xRange, yRange) => { const x = randomRange(xRange[0], xRange[1]) const range = yRange[1] - yRange[0] + 1 let y = yRange[1] - Math.abs(randomRange(0, range) + randomRange(0, range) - range) if (y >= yRange[1] - 1) { // Occasional confetto goes higher than the max y += (Math.random() < .25) ? randomRange(1, 3) : 0 } return {x: x, y: -y}
} // Confetto Class
function Confetto() { this.randomModifier = randomRange(0, 99) this.color = colors[Math.floor(randomRange(0, colors.length))] this.dimensions = { x: randomRange(5, 9), y: randomRange(8, 15), } this.position = { x: randomRange(canvas.width/2 - button.offsetWidth/4, canvas.width/2 + button.offsetWidth/4), y: randomRange(canvas.height/2 + button.offsetHeight/2 + 8, canvas.height/2 + (1.5 * button.offsetHeight) - 8), } this.rotation = randomRange(0, 2 * Math.PI) this.scale = { x: 1, y: 1, } this.velocity = initConfettoVelocity([-9, 9], [6, 11])
}
Confetto.prototype.update = function() { // apply forces to velocity this.velocity.x -= this.velocity.x * dragConfetti this.velocity.y = Math.min(this.velocity.y + gravityConfetti, terminalVelocity) this.velocity.x += Math.random() > 0.5 ? Math.random() : -Math.random() // set position this.position.x += this.velocity.x this.position.y += this.velocity.y // spin confetto by scaling y and set the color, .09 just slows cosine frequency this.scale.y = Math.cos((this.position.y + this.randomModifier) * 0.09) } // Sequin Class
function Sequin() { this.color = colors[Math.floor(randomRange(0, colors.length))].back, this.radius = randomRange(1, 2), this.position = { x: randomRange(canvas.width/2 - button.offsetWidth/3, canvas.width/2 + button.offsetWidth/3), y: randomRange(canvas.height/2 + button.offsetHeight/2 + 8, canvas.height/2 + (1.5 * button.offsetHeight) - 8), }, this.velocity = { x: randomRange(-6, 6), y: randomRange(-8, -12) }
}
Sequin.prototype.update = function() { // apply forces to velocity this.velocity.x -= this.velocity.x * dragSequins this.velocity.y = this.velocity.y + gravitySequins // set position this.position.x += this.velocity.x this.position.y += this.velocity.y } // add elements to arrays to be drawn
initBurst = () => { for (let i = 0; i < confettiCount; i++) { confetti.push(new Confetto()) } for (let i = 0; i < sequinCount; i++) { sequins.push(new Sequin()) }
} // draws the elements on the canvas
render = () => { ctx.clearRect(0, 0, canvas.width, canvas.height) confetti.forEach((confetto, index) => { let width = (confetto.dimensions.x * confetto.scale.x) let height = (confetto.dimensions.y * confetto.scale.y) // move canvas to position and rotate ctx.translate(confetto.position.x, confetto.position.y) ctx.rotate(confetto.rotation) // update confetto "physics" values confetto.update() // get front or back fill color ctx.fillStyle = confetto.scale.y > 0 ? confetto.color.front : confetto.color.back // draw confetto ctx.fillRect(-width / 2, -height / 2, width, height) // reset transform matrix ctx.setTransform(1, 0, 0, 1, 0, 0) // clear rectangle where button cuts off if (confetto.velocity.y < 0) { ctx.clearRect(canvas.width/2 - button.offsetWidth/2, canvas.height/2 + button.offsetHeight/2, button.offsetWidth, button.offsetHeight) } }) sequins.forEach((sequin, index) => { // move canvas to position ctx.translate(sequin.position.x, sequin.position.y) // update sequin "physics" values sequin.update() // set the color ctx.fillStyle = sequin.color // draw sequin ctx.beginPath() ctx.arc(0, 0, sequin.radius, 0, 2 * Math.PI) ctx.fill() // reset transform matrix ctx.setTransform(1, 0, 0, 1, 0, 0) // clear rectangle where button cuts off if (sequin.velocity.y < 0) { ctx.clearRect(canvas.width/2 - button.offsetWidth/2, canvas.height/2 + button.offsetHeight/2, button.offsetWidth, button.offsetHeight) } }) // remove confetti and sequins that fall off the screen // must be done in seperate loops to avoid noticeable flickering confetti.forEach((confetto, index) => { if (confetto.position.y >= canvas.height) confetti.splice(index, 1) }) sequins.forEach((sequin, index) => { if (sequin.position.y >= canvas.height) sequins.splice(index, 1) }) window.requestAnimationFrame(render)
} // cycle through button states when clicked
clickButton = () => { if (!disabled) { disabled = true // Loading stage button.classList.add('loading') button.classList.remove('ready') setTimeout(() => { // Completed stage button.classList.add('complete') button.classList.remove('loading') setTimeout(() => { window.initBurst() setTimeout(() => { // Reset button so user can select it again disabled = false button.classList.add('ready') button.classList.remove('complete') }, 4000) }, 320) }, 1800) }
} // re-init canvas if the window size changes
resizeCanvas = () => { canvas.width = window.innerWidth canvas.height = window.innerHeight cx = ctx.canvas.width / 2 cy = ctx.canvas.height / 2
} // resize listenter
window.addEventListener('resize', () => { resizeCanvas()
}) // click button on spacebar or return keypress
document.body.onkeyup = (e) => { if (e.keyCode == 13 || e.keyCode == 32) { clickButton() }
} // Set up button text transition timings on page load
textElements = button.querySelectorAll('.button-text')
textElements.forEach((element) => { characters = element.innerText.split('') let characterHTML = '' characters.forEach((letter, index) => { characterHTML += `<span class="char${index}" style="--d:${index * 30}ms; --dr:${(characters.length - index - 1) * 30}ms;">${letter}</span>` }) element.innerHTML = characterHTML
}) // kick off the render loop
window.initBurst()
render()
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